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arXiv · 1907.01036

On the multiloop soft theorem of the dilaton in the bosonic string

Paolo Di Vecchia·Raffaele Marotta·Matin Mojaza
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Abstract

In this note we show that by fixing the multiloop Green function in the closed bosonic string to be Arakelov's Green function, one obtains factorization of scattering amplitudes with a softly emitted dilaton to the same level as with a graviton to all loop order. This extends our previous analysis at one loop to all loop orders and confirms that some high-energy quantum symmetry in the bosonic string protects the factorization of amplitudes with softly emitted dilatons.

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Paolo Di Vecchia, Raffaele Marotta, Matin Mojaza. 2019-07-01. On the multiloop soft theorem of the dilaton in the bosonic string. https://doi.org/10.1103/physrevd.100.041902

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